Track 03 - Beyond - Length: 3:05, 185s. Image at: 00:00.

Track 04 - Progress - Length: 4:16, 256s. Image at: 04:10.

FEZ letter D, J, P, or W? Or the side of a gold cube? The rotation might be emphasizing that it's not a FEZ letter. Golden cubes is also how you progress in the game, which coincides with the song name "Progress".
The song duration is 256s. Which implies:
256bits = 32bytes.
1 byte = 8bits.
Note that 1 Golden Cube = 8 Golden Cube shards.
FEZ Alphabet: http://www.ign.com/wikis/fez/Fez_Alphabet